That’s for sure. With left and right exactly tied at 60 seats each in the 120-seat parliament (with 99.8% of votes counted at press time), Lapid essentially gets to decide who will be Israel’s next prime minister.

He can bring his 19-member caucus of moderate liberals across the aisle to prop up the staunchly conservative incumbent Benjamin Netanyahu, who came in first with 31 seats but lost his old majority. Or he can join with his fellow liberals, former foreign minister Tzipi Livni and Labor Party leader Shelly Yachimovich, to form a new majority, presumably after wooing over a few defectors from the right. Either option is perfectly legal. Both entail betraying one or more of his core principles. It’s all up to Lapid.

It won’t be easy. A hugely popular television anchor and newspaper columnist, Lapid jumped into politics a year ago to clean things up. He considers himself a devout centrist, committed to rising above politics-as-usual and creating a government “that unites the moderate forces on left and right,” as he put it election night.

His first instinct is to give the baton democratically to first-place winner Netanyahu. The two began discussing a partnership as soon as exit polls came in, according to published reports. But joining Netanyahu might prove impossible, due to complicated mathematics and a gulf in core values. It’s going to get messy.

In the end, Lapid is likely to find himself in the same position as another political naïf who entered national politics not so long ago with hopes of rising above politics as usual. I’m talking about Barack Obama. Lapid’s problem, like Obama’s, is that the divisions are real. The game gets ugly because the stakes are so high. Like Obama, Lapid will find that the moderate center he wants to assemble simply doesn’t exist within today’s legislature.

Lapid’s rude awakening will arrive a lot quicker than Obama’s. Within 77 days, to be exact. That’s how long Israel’s quasi-constitutional basic law allows, from the moment the vote results are officially published, for a would-be prime minister to negotiate with other parties, forge a viable coalition and win a Knesset vote of confidence.

Here’s how it works: Israel’s ceremonial president, 89-year-old liberal icon Shimon Peres, has seven days to consult with all the parties, hear their recommendations for prime minister and then tap the likeliest contender. Peres’s choice gets 42 days to craft a coalition. If he or she fails, the president can pick someone else, who then has 28 days to try. Failing that, the Knesset is dissolved and new elections follow. With the blocs tied 60-60 and the sides more polarized than ever, that’s not inconceivable.

Netanyahu wants Lapid to join him in a centrist bloc, united behind Lapid’s signature cause of ending draft deferments for ultra-Orthodox yeshiva students. Between them they have 50 seats. They aim to join forces with the other new star of this election, high-tech entrepreneur Naftali Bennett of the pro-settler Jewish Home party, who agrees on ending the yeshiva deferment. Now they total 61. Add in the two seats of the once-mighty Kadima and they get to 63. Shaky, but it’s a start. They disagree on Palestinian statehood, but Lapid figures that can be put on the back burner.

This could be a pipe dream, though. However moderate the two leaders’ personal images, Lapid’s hand-picked team is well to his left and Bennett’s bench is uniformly on the right. Lapid’s top lieutenants include two determined advocates of Palestinian statehood, freezing settlements and 1967 borders with land swaps: former Shin Bet director Yaakov Peri and Herzliya Mayor Yael German, a longtime stalwart of the left-wing Meretz. Most of their caucus agrees. Bennett’s party, on the other hand, is utterly opposed to any Palestinian statehood; indeed, at least six of his 10 lieutenants have spent their careers in militant settler activism. For that matter, about half of Netanyahu’s caucus flat-out opposes Palestinian statehood and dismisses Bibi’s own two-state talk as just so much diplomatic humbug. Further complicating matters, the rest of Lapid’s bench consists of liberal warriors for women’s rights, religious pluralism and similar social causes, all flatly opposed by Bennett’s hard-line conservative crew.

Even if they find a common language, a 63-seat majority is impossibly unstable. How do they bulk up? Looking to their right, they find the ultra-Orthodox parties, Shas and United Torah Judaism. Both are implacably opposed to drafting yeshiva students, the sole basis for Lapid’s signing on. On the left they meet Tzipi Livni, whose platform begins and ends with Palestinian statehood.

Lapid’s alternative, joining fellow liberals Livni and Yachimovich in a left-leaning coalition, is no less complicated. They begin with 60 seats. This shuts out Netanyahu by denying him a 61-seat majority. But it doesn’t give them a majority. Moreover, their 60 seats include 12 members of anti-Zionist, Arab-backed parties that have never been part of an Israeli coalition. The liberal trio could theoretically woo over a few lawmakers from the right and form a minority government, relying on tacit Arab backing. But no lawmakers on the right would agree to be part of it.

To form a governing coalition, then, they need to bring over the two Haredi parties en bloc, Shas and United Torah Judaism. Happily, neither party opposes Palestinian statehood in theory. As non-Zionist Haredi parties, they don’t regard Israel as the biblical Jewish kingdom, and therefore the Torah’s promised borders having no bearing on policy.

Rumors are flying, too, of back-channel outreach to the left from members of Avigdor Lieberman’s Yisrael Beiteinu third of the combined Likud-Beiteinu list who might cross over if the Haredim do. Many in Lieberman’s devoutly secular group don’t object to Palestinian statehood — in fact, they’d be happy to include Israeli Arab villages in a land swap.

As for Shas, its leaders have stated repeatedly that they could join either side this year. One, party founder Aryeh Deri, who was jailed in 2000 for taking bribes but reclaimed a top spot this year, is a staunch dove and social democrat. His return appears to have tipped the party leftward.

Of course, that puts the kibosh on drafting yeshiva students. Did we mention that this is messy?

Lapid has about a week or two from election day to tell the president which of his principles he wants to betray. When the countdown begins depends, perhaps appropriately, on how long it takes to tally absentee ballots from diplomats, soldiers, prisoners and institutionalized mental patients. The outcome will determine Israel’s future.